Chakles green



- tattica-gietengatwt @attira Letters Patent No. 98,053, dated December21, 1869. i

sTUFmNG-Box .QN-n- The Schedule referred to in these Letters Isatent andmaking part; of the same To all 'whom it may conce/rn Be it known thatI, CHARLES GREEN, of the city .and county of Philadelphia, and State ofPennsyl- Vania, have invented a new and useful Stuing-Box forsteam-cylinders, steam-chests, y 85e.; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to 'the accompanying sheet of dra\vings,and to the let- Onreference to the accompanying sheet of drawings, making part of thisspecilication- Figure 1 is a perspective view, and

Figure 2 is also a perspective view, one cap be-ing removed to show theinternal arrangement of the stuffing-box, and one end being sectioned toexhibit the wedge-shaped or converging formation of the packingchambers.

Similar letters refer to similar parts iu the several views.

A'is a stutling-box, which is bolted to the cylindercover bf asteam-engine, or to the steam-chest of the same, as thecase may be, bymeans ofthe flange B.

It is divided, by the diaphra gms a a, into three compartments, b b' c,the een tre one, c, being a water-chamber, and the slides b b beingpacking-chambers which communicate with the water-chamber, by beingshorter than it, leaving-a space or water-way at both ends of thestuffing-box.

The packing-chambers are divided centrally by the piston or valve-rod O,as it were, into four packingchambers, two on each side of thewater-chamber c, each of which nclin'es or converges at top and bottomtoward the piston or valve-rods, as shown at c c2, g. 2.

The corks or packings d are recessed or concaved at their inner ends, toconform wit-h the sulface of the piston or valve-rod, and their upperand lower edges are conformed to the converging of the chamber, s0

that it will be seen that the corks must beinserted into the respectivechambers oppositcly,for on both sides of the pistou or valve-rod, andthat it requires two corks in the same chamber to make a completepacking.

The convergence of the packing-chambers is for converging the entirepressure of the corks immediately onthe piston or valverod, and to notpermit them to spread and split, which they would if not confined.4'After the corks are in place, batting-pieces e, of metal packings, bymeans of the end water-ways, swells them tightly around the piston orvalve-rod, and also completely fills the packing-chambers, therebyenabling the said piston or valve-rod to pass in and out without leakingsteam or air.

After the water becomes sufficiently heated, by reason of its contactwith the pistou-rod and stntingbox, which acquire their temperature'from the cylinder, its'pressure is such as to overcome the pressure ofthe atmosphere, and is discharged through the check-valve F, by apipe,audconducted to a' place where it will cause no inconvenience, -and anadditional supply is admitted through the supply-pipe E, whereby thetemperature of the stuiing-box is kept down, and the piston or valve-rodin a measure cooled.

The jam-nuts g, of the packing-screws f,-'are provided with gum packingsh, which take against the caps of the stuing-box, and prevent the escapeof' water through threads of the caps and packingscrews f.

The cock G,-on the top of the stuffing-box, es-

capes all air from the chamber c,.while being filled with water.

' The corks can be cut in three sections, as shown by the supplementalview of the accompanying sheet of drawings, the rniddlesection being ofa width corresponding to the diameter oi' the piston or valverod, forthe purpose of taking up its wear, while the middle or centre section isadvanced to the piston or valve-rod, the side corks can becorrespondingly advanced by compression.

In lieu of the flange for securing the stning-box to its cylinder, ascrew-nozzle can be used.

What I claim as my invention, and desire to seclue by Letters Patent, is

1. The use and application of cork and water in a stuffing-box,substantially for the purpose shown and described. 'h

2. A stuug-box composed of packing, and water-chambers, substantially asshown and described.

3. .The packing-chambers b b', with converging tops and bottoms, c c2,substantially as shown and described. l 4. The chambers b b', incombination with the cork packings d, buttingplates e, packing screws f,covers or caps I), jam-nuts g, and the gum packings h, substantially asand for the purpose shown and described.

5. The packing-chambers b b', water-chamberc, 'packings d, supply-pipeE, check-valveF, and the cock G, when combined and arranged as and forthe purpose shown and described. f

1n testimony whereof, I hereunto sign my name to this specification, inpresence of two subscribing witnesses.

a GHARLES GREEN. Witnesses: i

FRANCIS D. PAsToRIUs, JOHN YnLLs.

